Steam-trap



(No Model.) I

J. B. BARRY.

STEAM TRAP. No. 343,690. Patented June 15 1886;

NlTED STATES ArnNr Fries.

STEAM-TRAP.

SPECIFICATION forming part of Letters Patent N0. 343,690, dated June 15, 1886.

Application filed November 13, 1885. Serial No. 182,738. (No model.)

To all whom it may concern:

Beitknown that I, J on It. BARRY, a citizen of the United States,residing at Philadelphia, in the county of Philadelphia and State of Pennsylvania, have invented certain new and useful Improvements in Steam-Traps; audI do hereby declare the following to be a full,

clear, and exact description of the invention,

reference being had to the accompanying drawings, which form part of this specifiaction, in which Figure 1 is a vertical section, and Fig. 2 a plan,of the trap with the top thereof removed.

My invention has for its object to improve the efficiency and lessen the cost of the manufacture of steam-traps.

My improvements consist in the peculiar construction and combination of parts hereinafter fully described and specifically claimed, having reference particularly to the combinanation,with the valve of the trap, of a counterpoise of peculiar construction connected to the stem of said valve by means of levers, as hereinafter fully set forth.

Referring to the accompanying drawings, A represents the shell of the trap, which is a casting preferably cylindrical in form, having a bottom, a, formed integral therewith, and a top, 13, which is flange-bolted to the body. Said body has an inlet-opening, H, below its rim,said inlet ascending or trending upwardly, and the bottom a has an outlet, to, in which the valve I has a seat, said valve opening downwardly, as shown.

D is the valve-rod, to which is pivotally connected at its upper end the inner ends of levers E E. Said levers have their fulcra at e e in lugs F F, which are cast integral with and depend from the under side of a dishshaped casting, G, formed with the peripheral lugs 99, which rest upon the upper edge of the body A, the outer ends of the saidleversbeing pivotally connected at c c to a counterpoise, O. Said counterpoise is a block of wood thoroughly incased in copper or other metallic integument 0, having a vertical central passsage, c, for the valve-rod I). Said block before being incased is thoroughly saturated with linseed-oil,to prevent the possibility of the heat of the water creating a pressure in the counterpoise that would rupture the copper casing or increase the size or bulk of the block 0", and thereby alter its specific gravity. The specific gravity of the counterpoise incased is slightly greater than that of water, so that it will barely sink in the latter. The tendency of the counterpoise,

therefore, is to descend, and thereby to draw trap, and when the water reaches the top of the counterpoise the tendency of the latter to keep the valve closed is completely neutralized. Then, if there be any pressure at all in the trap, or but a few inches of water above the top of the counterpoise, the valve will open and allow the water in the trap to escape until the level of the water in the trap falls to a point at which the pressure balances the counterpoise, when the water will continue to flow out of the trap in a continuous stream as rapidly as it flows in. As there is always a body of water in the bottom of the trap under ordinary conditions of use,the steam 'can not escape.

L represents ascrew,which fits in athreaded opening in the center of top B and enters an opening in the center of the casting G. By turning down the screw the valve may be opened or depressed from its seat for cleaning or blowout purposes. An opening in the top 13, for the reception of an air-valve, is shown at m.

"What I claim as my invention is as follows:

1. In a steam-trap, the combination, with a valve, I, having a rod, D, of a counterpoise for said valve, such counterpoise consisting of a wooden block having ametal casing, substantially as shown and described.

2. In a steamtrap, the combination, with the valve I and its rod D, of counterpoise O,

consisting of an ineased Wooden block, levers have hereunto set my hand this 16th day of E E, and support G-,11aving lugs F F, for sus- J une, 1885.

taining said levers, said several parts being 4 V constructed and arranged for operation sub- JOB BARRY 5 stantially as shown and described, and oper- XVitnesses:

ating in the manner set forth. R. DALE SPARHAWK,

In testimony that I claim the foregoing I A. A. OONNOLLY. 

